The spring evaluation period is a prime time for college coaches to find out more about the nation's top prospects. However, the coaches aren't the only ones spending countless hours on the road at camps, combines and practices.

Rivals.com's recruiting analysts have spent the past month and a half scouring the nation. The Rivals100 update for June features some big movers, including significant changes in the top 40.

RIVALS100 MOVER

Shayne Skov moved from No. 242 to No. 34 overall in the latest update to the Rivals100.

The most notable movement comes in the lower 30s. That's where three new players made their first appearances in the Rivals100.

The biggest debut comes from Pawling (N.Y.) Trinity Pawling outside linebacker Shayne Skov. The 6-foot-2, 226-pound Stanford commitment moves all the way to No. 34 after strong showings at the Premier Showcase and the State College NIKE Training Camp.

"Shayne Skov gets bigger and stronger and faster each time we see him," Rivals.com recruiting analyst Mike Farrell said. "He improved so much from the Feb. 17 event at Rutgers to the Penn State NIKE Camp in May in regards to quickness, burst and size that a huge jump is warranted. He's going to be a jumbo-sized linebacker that can run with wideouts."

Immediately behind Skov at No. 35 was another newcomer.

Florence (S.C.) West Florence strongside defensive end Malliciah Goodman moves into the Rivals100 after an impressive showing at the Chapel Hill NIKE Training Camp. He made a significant jump from No. 153 to 35 after he dominated in one-on-ones and drill work.

The 6-foot-4, 258-pounder has already committed to Clemson. He picked the Tigers back in early February, turning down scholarship offers from Maryland, South Carolina, Tennessee and Virginia.

"Physically, he was the most impressive prospect I have seen on the camp circuit this year," Rivals.com recruiting analyst Barry Every said. "He is humble, a good student and the type of athlete and person college coaches desire to have on their teams. He also had the biggest hands I have ever seen. Defensive ends have to use their hands in every play, especially strongside ends that are lined up over a tight end and offensive tackle."

Pflugerville, Texas, weakside defensive end Alex Okafor was another major addition to the Rivals100. The 6-foot-5, 232-pound prospect moves up from the No. 203 spot to the No. 36 spot after destroying competition at the Fort Worth NIKE Camp. Every said Okafor, who is committed to Texas, was dominating at the camp and is deserving of a big jump.

"He has grown since the last time he was evaluated," Every said. "He was very quick off the ball and was unstoppable. He is another high character kid that is a good student. I can't reiterate how important this is to college coaches."

There were also two players that were previously unranked that made noteworthy moves into the top 100. Atlanta Carver safety Darren Myles and Wellington (Fla.) Palm Beach Central linebacker Jon Bostic were elevated to the four-star level and landed spots in the Rivals100 at Nos. 74 and 52, respectively.

Both were no-brainers, according to new Rivals.com recruiting analyst Jamie Newberg.

"Bostic became one of the hottest linebacker prospects during the May Evaluation period," Newberg said. "He has a nice combination of size and speed. He is an aggressive and physical presence. He flies all over the field, plays sideline-to-sideline and can be a punishing finisher when it comes to tackling. Bostic is also adept at sifting through traffic to locate the ball."

"Myles is a kid with very good size, speed and he has great range to come up and support the run or defend the pass. He is tough to throw over the top of, and he can be a physical presence in the middle. He's also versatile, and could play either safety position in college."

Three other players made debuts in the Rivals100 – Danville (Va.) George Washington running back David Wilson at No. 63, Chesapeake (Va.) Oscar Smith linebacker Jerod Askew at No. 71 and Monroeville (Pa.) Gateway athlete Corey Brown at No. 73.

There were no moves in the top 10. But at No. 11 now is Corona (Calif.) Centennial linebacker Vontaze Burfict. At No. 16 is Detroit Cass Tech defensive tackle William Campbell. Burfict was previously at No. 12, and Campbell was at No. 23.

"Seeing Vontaze at the NIKE Camp convinced me he's for real," Every said. "And Campbell not only is one of the strongest players in the nation, he's definitely one of the best run stuffers in this year's class."

Rivals.com will release the updated Rivals250 on Tuesday, along with the first official position rankings for the class of 2009 on Wednesday.